The Latin language helped unify the Roman Empire. It was the official language of the Roman government, and it was also used by the military, the legal system, and the business community. Latin was also the language of education and culture in the Roman Empire, and it was the language that was used to write most of the literature, philosophy, and history that was produced during this time. As the Roman Empire expanded, Latin was also adopted by the people of the conquered territories, and it eventually became the common language of the entire empire.